Peters



J. H. GONNELLY. Fire-Extinguishing Apparatus.

No. 196,632 Patented oct. 30,1377.

described, when itis removed and the cap re- ,"Wlinuse'd Sapa pretua-itearbem0 Hit f met tri @Hageman me cyliil er o v chamber, B, madeof some considerable capacity and), inside of which is arevoli 'nhgderly constructed Wit "n l for agitating thewater lljtle` 2, flasher-stemprojectsthrough a stuffing-nut, b, and is covered by the cap b2, toprevent all leakage, which, however, is removed When the dasher isoperated.` v A crank, blgmay be provided for working the dasherz ashereinafterl placed.

A hole, through which to llthe chamberB With Water, is provided, whichmay be separate, as at B2, or conne'ct With the opening through D.It'aseparate opening be used, it is provided with a screw-cap, plug, orvalve, for sef curely closing it. Y

A charging-hopper' is shown at D, which communicates with the chamber B,such communication being opened and closed at -pleasr" erurrl ure bymeans of a gate, or other suitable form eed-tyler he ella ber Bito.-apoutat or near"thel ,j Ep'.-

:urjAf ge maybe added, as. "shjownat' n .Y ,'onwvlrich' is rolledthe'hos'e leads ,from 'the chamber B," for" Water' an "gas to'. Joe;applied to 'A af ystopf--coc'k and 'halficonp'ling V re added, "inneusuai purposes..." I 2 1g" this apparatus refuse; theiilled'nearly'full; or to.. tle 'dei' With Water Ytlmgugh the Ahole` 3f; i"uttering; wnichlistneutipsed stnternalpressure. -Pth f Simile" @whenMinghi tv r 41n any eonvenientwa'y, aperta rou's ulpgliate'of alum flef.feryst iizet-iomtnequa used@ here after' described." -lshe 'wat 4 'ff5611i theh agitated bythe daher ite-u, rui-e1- the fsuilgrnateor-ehimir1y fnearlylssolved, or' held' inf;l r@ very met @kerl-aerith- Aatedaand'cck a being' clesedff v mteeautnfwitnuie th 1 ;0 per'Dgis"charged' wv'ith' the` of granulated bicarbonate' of f j soda, sayv aboutone-half the amount, by ine-asl ure, of the sulphate of aluminum chargedinto the chamber B. The cap D being screwed on, the apparatus is readyfor use When required.

On opening the gate 1,'a portion of the biy carbonate of soda in thehopper D Will fall into the chamber B, and, uniting chemically with thesulphate of aluminum held in solution, carbonio-acid gas will be rapidlygiven oi'. As the quantity of such gas increases, it Will, beingconined, exert a powerful pressure Within the inclosing-chamber. Thecock a being opened, such pressure will be communicated to the hopper Don the upper side of its contents, which will not only balance theupward pressure through the gate d, but Will alsmassist inforcing suchcontents into the,

chambeB by reason of the increased area of its 'u'pp'er surface. Iprefer, in practice, to use such an amount of the ingredients named aswill furnish carbonic-acid gas in sufficient quantity to mix with thewater in the chamber B, and give a pressure therein of about one hundredand ty pounds tothe square inch, more or less. The amount required Aforthis purpose will, ofcourse, vary with the size of the chamber and theamount o i water contained therein. I prefer, however, to use theingredients named" in about the proportions given-that is, two parts, bymeasure of sulphate of aluminum to one part, byflneasure, of bicarbonateof soda; but suchproportions may be Varied somewhat, and stilll'obtainuseful results. f Thed'egree of pressure in the chamber B can, ofcourse, be varied at pleasure; but under ordinary conditions I considerthe pressure rifained desirable.' TI'f, atany time, the gage cv shouldindicate the required pressure before all the contents of the hopper Dhave passed to the chamber B, further'increase may, in a measure, beprevented by closing the gate d and cock a. hose R being attached to thepipe e by lneansof suitable coupling e2, and the cock el opened, thepressure within the chamber will force the mingled gas and water outthrough the'hose, by which it may be directed as de- Sirdi'".y Q

'This mitureof water and carbonio-acid fgas isvell known to `be veryeiectual iu extinguishing fires', and' to possess marked advana'ges overeither used alone, and such 'mixturfe se'ectually and economicallysecured by v the apparatus and ingredients described. The y yB, hopperD,valve"d i porfussulphate charged into the chamber B withth'e water iseasily held in solution, and

' th'egranulated bicarbonate in the hopper D is' well adapted tochemically combine 'with 'tf e 'sulphate and rapidly give oicarbonic-acid e gas. The chemical reaction between these ingredientsleaves no acid products'to injure either the apparatus or articlescoming in con-V Y tact therewith, and this feature I consider a greatadvantage in favor of the ingredients named.

, a gate or valve, el, sub

In itestimouywhereo I h hereunto' Vmyhamit' gf l e Josnrnnfoounnnnrwattage-a Other alkaline and eft'eryeseipg--compounds,

the chemical equiyalentsjofggthose'giiren, may i be substitutedwithuseful results; but'tho'se y described 1 consider the best for thepurpose.

Under certain conditions it may be desirable to add to the water in thechamber B mui riate of ammonium, or.chloride of sodium, ,or both, insuch quantities as to lbe readily soluble in the water employed;` Buchsalts are not intended to aid inf-'generatinggasfbut, being held insolution by the water, they coat, as it were, the object uponwhich thewater and gas are thrown, and render such object less inflammable.

When the described apparatus is used for extinguishing res in 'closedapartmentaas-in the holds of ships,"oiltallks,` or likeplace's Wheresuiocatio'n is nnot likely' to follow, comrounds of Sulphurfwhihfwhhignited, 'toriaV sulphurous fumes, may beithrwnonto or into` the f re,together'with ifthe'lnngled gasaiid water; but I make no lclaintothe useof'jsuch; compounds alone,` nortofthefuse .of mingled gas and water'forfextinguishing res, suchf uses being oldinftheart.

The ingredients andcomp ounds herein scribed, as used inv my, li1'1' 1p'1"oved apparatus, will form the subjectniatterof a separat plication. jj j i I claim herein" as in elitionlf-4 i v 1.5111 nre-"extingaHingappafa combination'of chamber ,having suitable in let and'outletports,L withlfdasher B, andfho perl) Orenilieiiltfsli l1 2. Thecombinatie D, valved, pipe a, as set forth.1 i

3.' The combin'atio' and ackags Stantially as Set 1, i

